Carburetor; Engine Speed - Craftsman 79964 Owner's Manual

BELTREMOVALAND REPLACEMENT
WARNING: Disconnect the spark plug
wire and move away from the spark plug.
• Remove the plastic belt cover on the front of the
engine by removing two self-tapping screws. Refer
to figure 19.
• Drain the gasoline and oil from the chipper-
vacuum.
• Tip the unit backward so that it rests on the
handles.
• Remove the frame cover by removing eight self-
tapping screws from underneath the chi0per-
vacuum. Refer to figure 14.
• Remove the idler pulley bracket as follows. See
figure 25.
• Take the tension off the belt by pivoting the
idler pulley toward you, and Iine up the holes in
the idler bracket assembly. Insert a nail or simi-
lar object through the holes to hold the idler
pulley in this position.
• Remove three self-tapping screws, and lift off
the idler bracket assembly.
Eng \ '
Bracket
Self-Tapping
Screws
Nail
FIGURE 25.
• Remove the hex bolt and lock washer from the
engine pulley. See figure 25. Slip the engine pulley
off the engine shaft, and remove the belt from the
pulley.
• Loosen the nut on the stop bolt until there is clear-
ance between the support bracket and the friction
wheel disc. See figure 26.
• Slip the belt between the friction wheel and friction
wheel disc. Remove and replace belt. Reassemble
following instruction in reverse order.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled.
Loosel
Nut
Stop Bolt
Support
Bracket
Friction
'Wheel Disc
FIGURE 26.
CARBURETORADJUSTMENT
,_ WARNING: IF ANY ADJUSTMENTS ARE
MADE TO THE ENGINE WHILE THE
ENGINE IS RUNNING (E.G. CARBURE-
TOR), KEEP CLEAR OF ALL MOVING
PARTS. BE CAREFUL OF HEATED SUR-
FACES AND MUFFLER.
The carburetor has been pre-set at the factory ancl
should not require adjustment. However, if your
engine does not operate properly due to suspecteC
carburetor problems, take your chipper-vacuum to
your nearest SEARS Service Center.
ENGINESPEED
Your engine speed has been factory set. Do not
attempt to increase engine speed or it may result ir
personal injury. If you believe the engine is running
too fast or too slow, take your chipper-vacuum to the
nearest SEARS Service Center for repair and adjust-
ment.
17